Description of problem: Since the update to Firefox 3.5 final, it often seems that Firefox goes up to 95+% CPU. Then, when I try to close the window, I get the "this application is not closing cleanly" popup from kwin and I force-kill it. Usually, when I then restart firefox, it gives the "Well, this is embarrassing" site and is unable to restore my tabs. Facebook seems to trigger this quite reliably for me, and gmail will usually also do it if I use it long enough, so I suspect it's somehow a Javascript-related problem. Version-Release number of selected component (if applicable): firefox-3.5-1.fc11.i586 How reproducible: Every time, eventually Steps to Reproduce: 1. Use Javascript-heavy pages like gmail or facebook
Thanks for the bug report. We have reviewed the information you have provided above, and there is some additional information we require that will be helpful in our diagnosis of this issue. First of all, could we get output of the command rpm -qa *xulrun* *firefox* *mozilla* *flash* nsplugin* Please also install firefox-debuginfo (debuginfo-install is from yum-utils package). debuginfo-install firefox Then run firefox with a parameter -g. That will start firefox running inside of gdb debugger. Then wait until the 100% CPU happens. When it does, you should go back to the gdb and interrupt with Ctrl-C. Then please run (gdb) thread apply all backtrace This produces usually many screens of the text. Copy all of them into a text editor and attach the file to the bug as an uncompressed attachment. We will review this issue again once you've had a chance to attach this information. Thanks in advance.
(In reply to comment #1) > Thanks for the bug report. We have reviewed the information you have provided > above, and there is some additional information we require that will be helpful > in our diagnosis of this issue. > > First of all, could we get output of the command > > rpm -qa *xulrun* *firefox* *mozilla* *flash* nsplugin* > > Please also install firefox-debuginfo (debuginfo-install is from > yum-utils package). > > debuginfo-install firefox > > Then run firefox with a parameter -g. That will start firefox running inside of > gdb debugger. Then wait until the 100% CPU happens. When it does, you should go > back to the gdb and interrupt with Ctrl-C. Then please run > > (gdb) thread apply all backtrace > > This produces usually many screens of the text. Copy all of them into a text > editor and attach the file to the bug as an uncompressed attachment. > > We will review this issue again once you've had a chance to attach this > information. > > Thanks in advance. Hello ... I have the same problem, especially by starting the facebook page ... I just click to enter and the system freezes ... need to be restarted even though the mouse responds (no keyboard) first of all, could we get output of the command rpm -qa *xulrun* *firefox* *mozilla* *flash* nsplugin* [root@fedora ~]# rpm -qa *xulrun* *firefox* *mozilla* *flash* nsplugin* mozilla-filesystem-1.9-4.fc11.x86_64 mozilla-vlc-1.0.0-1.fc11.x86_64 firefox-3.5.1-3.fc11.x86_64 xulrunner-python-1.9.1.1-1.fc11.x86_64 xulrunner-1.9.1.1-1.fc11.x86_64 Please also install firefox-debuginfo (debuginfo-install is from yum-utils package). debuginfo-install firefox =================================================================================================================================== Package Arch Version Repository Size =================================================================================================================================== Installing: GConf2-debuginfo x86_64 2.26.2-1.fc11 updates-debuginfo 599 k .......... Install 17 Package(s) Update 0 Package(s) Remove 0 Package(s) Total download size: 232 M Downloading Packages: Setting up and reading Presto delta metadata Processing delta metadata Package(s) data still to download: 225 M.... hummm so much to debug and trace or not???? Then run firefox with a parameter -g. That will start firefox running inside of gdb debugger. Then wait until the 100% CPU happens. When it does, you should go back to the gdb and interrupt with Ctrl-C. Then please run (gdb) thread apply all backtrace [myuser@fedora11x86_64 ~]$ firefox -g MOZILLA_FIVE_HOME=/usr/lib64/firefox-3.5.1 LD_LIBRARY_PATH=/usr/lib64/firefox-3.5.1:/usr/lib64/firefox-3.5.1/plugins:/usr/lib64/firefox-3.5.1 DISPLAY=:0 FONTCONFIG_PATH=/etc/fonts:/usr/lib64/firefox-3.5.1/res/Xft DYLD_LIBRARY_PATH=/usr/lib64/firefox-3.5.1:/usr/lib64/firefox-3.5.1 LIBRARY_PATH=/usr/lib64/firefox-3.5.1:/usr/lib64/firefox-3.5.1/components:/usr/lib64/firefox-3.5.1 SHLIB_PATH=/usr/lib64/firefox-3.5.1:/usr/lib64/firefox-3.5.1 LIBPATH=/usr/lib64/firefox-3.5.1:/usr/lib64/firefox-3.5.1 ADDON_PATH=/usr/lib64/firefox-3.5.1 MOZ_PROGRAM=/usr/lib64/firefox-3.5.1/firefox MOZ_TOOLKIT= moz_debug=1 moz_debugger= which: no ddd in (/usr/lib64/qt-3.3/bin:/usr/kerberos/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/manuelricardo/bin) /usr/bin/gdb /usr/lib64/firefox-3.5.1/firefox -x /tmp/mozargs.sslNVH GNU gdb (GDB) Fedora (6.8.50.20090302-33.fc11) Copyright (C) 2009 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-redhat-linux-gnu". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>... (gdb) but firefox not run... some thing is wrong??? best regards.
hummm but if i run firefox in safe mode this problem does not present... [mysuser@fedorax86_64 ~]$ firefox -safe-mode Registering '@mozilla.org/module-loader/python;1' (libpyloader.so) Registering '@mozilla.org/network/protocol/about;1?what=python' (pyabout.py) /usr/lib64/xulrunner-1.9.1/python/xpcom/__init__.py:54: DeprecationWarning: BaseException.message has been deprecated as of Python 2.6 self.message = message maybe can be a plugin????... hummm i'm going to try any more "escenarios"
I have the same problem, and am going to try the FlashBlock plugin (as recommended at http://blog.taragana.com/index.php/archive/how-to-solve-100-cpu-hogging-by-firefox-in-2-steps/) to see if it helps.
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I reopen this bug with firefox 25.0-3.fc19.x86_64. After the updating to 25.0, firefox almost always takes up 100% CPU after some time, and responds sluggishly. I have to kill it and reopen a new instance. By "some time" it is about 20 minutes or so.
Same issue with firefox 25.0-3.fc18.x86_64
Do you have any reproducer? Affected web page or so? Can you test firefox in safe mode? (https://fedoraproject.org/wiki/How_to_debug_Firefox_problems)
Firefox in safe mode produces no problem so far. So it might be related to hardware acceleration, some extensions or themes. I'll try test more.
I'd try the extensions/plugins first.
With half of my installed extensions disabled, I do not see the issue these days. So it should be problems with the extensions, not with firefox itself. So I decide to close the bug now.
The needinfo request[s] on this closed bug have been removed as they have been unresolved for 1000 days